Abstract
Abstract A laboratory system composed of an electrodynamic levitation cell within an environmental control chamber has been designed and built. The system is ideal for studies of individual particles, such as pure water droplets, aqueous solution droplets, solid salt particles, and ice crystals, under mid- and upper-tropospheric conditions. The experimental system has several features that make it particularly useful for studies of cloud physics. The levitation cell has a cubic geometry with transparent electrodes, thus allowing for full, three-axis positioning of a levitated particle, as well as a large range of viewing angles for optical access and light-scattering measurements. Particles in the approximate diameter range of 10 to 100 μm can be suspended indefinitely with minimal wall influences. The levitation cell is housed within an environmental control chamber capable of operating at temperatures (T), pressures (p), vertical velocities (w), and saturation ratios (with respect to ice, Si) in the ran...
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